/* roulang page: index */
:root {
      --ink: #171716;
      --paper: #f4f2ed;
      --white: #fffefa;
      --coral: #e5644e;
      --mint: #c8e2d5;
      --yellow: #e8c85b;
      --muted: #77766f;
      --line: #dedbd3;
      --radius: 8px;
      --shadow: 0 12px 32px rgba(23, 23, 22, .08);
      --content: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    button { font: inherit; }
    img { display: block; max-width: 100%; }
    .container { width: min(var(--content), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(244, 242, 237, .94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(23, 23, 22, .1);
    }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 900; white-space: nowrap; }
    .brand-mark {
      width: 34px; height: 34px; display: grid; place-items: center;
      border-radius: 50%; color: var(--white); background: var(--coral);
      font-size: 17px; font-weight: 900;
    }
    .nav-links { display: flex; align-items: center; gap: 8px; }
    .nav-link { padding: 9px 13px; border-radius: 6px; color: #56554f; font-weight: 650; transition: .2s ease; }
    .nav-link:hover, .nav-link:focus-visible, .nav-link.active { background: #e8e5dd; color: var(--ink); outline: none; }
    .nav-actions { display: flex; align-items: center; gap: 12px; }
    .age-note { color: var(--muted); font-size: 12px; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 9px;
      min-height: 44px; padding: 10px 17px; border: 1px solid transparent;
      border-radius: 6px; font-weight: 750; transition: transform .2s, background .2s, box-shadow .2s;
    }
    .button:hover { transform: translateY(-2px); }
    .button:focus-visible { outline: 3px solid rgba(229, 100, 78, .35); outline-offset: 2px; }
    .button-dark { background: var(--ink); color: white; }
    .button-dark:hover { background: #343430; box-shadow: var(--shadow); }
    .button-coral { background: var(--coral); color: white; }
    .button-coral:hover { background: #cc503d; }
    .hero {
      padding: 52px 0 38px;
      background: var(--ink);
      color: var(--white);
      overflow: hidden;
    }
    .hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
    .eyebrow { color: var(--yellow); font-weight: 800; letter-spacing: 0; font-size: 12px; text-transform: uppercase; }
    .hero h1 { max-width: 730px; margin: 14px 0 18px; font-size: clamp(36px, 5vw, 62px); line-height: 1.16; font-weight: 900; }
    .hero-copy { max-width: 690px; color: #d1d0c9; font-size: 16px; line-height: 1.95; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
    .hero-visual {
      position: relative; min-height: 350px; border-radius: 8px; overflow: hidden;
      background: #283c38;
      background-image: linear-gradient(90deg, rgba(15, 27, 25, .28), rgba(15, 27, 25, .02)), url('https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=1200&q=85');
      background-size: cover; background-position: center;
      display: flex; align-items: end; padding: 25px;
    }
    .hero-visual::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, rgba(17, 24, 22, .78)); }
    .visual-caption { position: relative; z-index: 1; max-width: 330px; }
    .visual-caption strong { display: block; font-size: 21px; line-height: 1.4; }
    .visual-caption span { color: #e0e5df; font-size: 13px; }
    .hero-foot { border-top: 1px solid rgba(255,255,255,.16); margin-top: 33px; padding-top: 17px; display: flex; gap: 24px; flex-wrap: wrap; color: #c5c4bd; font-size: 12px; }
    .hero-foot b { color: white; }
    main section { padding: 72px 0; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head h2 { margin: 0; font-size: 30px; line-height: 1.25; font-weight: 850; }
    .section-head p { max-width: 610px; margin: 9px 0 0; color: var(--muted); }
    .section-kicker { color: var(--coral); font-size: 12px; font-weight: 850; margin-bottom: 8px; }
    .pain-band { background: var(--mint); }
    .pain-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: center; }
    .pain-quote { font-size: 27px; line-height: 1.5; font-weight: 850; }
    .pain-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .point { padding: 16px; border-left: 3px solid var(--coral); background: rgba(255,255,255,.45); font-weight: 700; }
    .point small { display: block; margin-top: 5px; color: #5f655f; font-weight: 450; }
    .solution-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px; }
    .solution-item { min-height: 192px; padding: 23px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); transition: .2s; }
    .solution-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
    .solution-item .number { color: var(--coral); font-size: 13px; font-weight: 900; }
    .solution-item h3 { margin: 10px 0 8px; font-size: 19px; }
    .solution-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .editorial { background: var(--white); }
    .editorial-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: stretch; }
    .editorial-image {
      min-height: 350px; border-radius: var(--radius);
      background: #54645d url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1200&q=85') center/cover;
    }
    .editorial-copy { padding: 18px 0; display: flex; flex-direction: column; justify-content: center; }
    .editorial-copy h2 { font-size: 32px; line-height: 1.35; margin: 0 0 16px; }
    .editorial-copy p { color: var(--muted); margin: 0 0 18px; }
    .tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag { padding: 5px 10px; border: 1px solid var(--line); border-radius: 4px; color: #55544f; font-size: 12px; background: var(--paper); }
    .steps { background: #e9e6de; }
    .step-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid #c9c6bd; }
    .step { padding: 24px 22px 8px 0; position: relative; }
    .step::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--coral); }
    .step .step-no { color: var(--coral); font-size: 12px; font-weight: 900; }
    .step h3 { margin: 8px 0 6px; font-size: 18px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .stats-band { background: var(--coral); color: white; padding: 45px 0; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
    .stat { border-left: 1px solid rgba(255,255,255,.45); padding-left: 20px; }
    .stat strong { display: block; font-size: 29px; line-height: 1.25; }
    .stat span { color: rgba(255,255,255,.83); font-size: 13px; }
    .voices { background: #dce9e2; }
    .voice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .voice { background: rgba(255,255,255,.65); border-radius: var(--radius); padding: 23px; }
    .voice blockquote { margin: 0 0 14px; font-size: 16px; font-weight: 650; }
    .voice cite { color: var(--muted); font-size: 12px; font-style: normal; }
    .audience-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 38px; }
    .audience-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
    .audience-list li { padding: 13px 15px; background: var(--white); border: 1px solid var(--line); border-radius: 6px; }
    .audience-list b { margin-right: 8px; }
    .audience-aside { padding: 25px; background: var(--ink); color: white; border-radius: var(--radius); }
    .audience-aside h3 { margin: 0 0 10px; font-size: 21px; }
    .audience-aside p { margin: 0; color: #cfcec7; }
    .news { background: var(--white); }
    .news-list { border-top: 1px solid var(--line); }
    .news-item { display: grid; grid-template-columns: 125px 1fr auto; align-items: center; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
    .news-date { color: var(--coral); font-size: 12px; font-weight: 850; }
    .news-item h3 { margin: 0; font-size: 17px; }
    .news-item p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
    .news-arrow { color: var(--coral); font-size: 20px; }
    .faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 44px; }
    .faq-grid h2 { margin: 0; font-size: 30px; line-height: 1.3; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { padding: 17px 0; border-bottom: 1px solid var(--line); }
    .faq-item h3 { margin: 0 0 6px; font-size: 16px; }
    .faq-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .final-band { background: var(--yellow); padding: 47px 0; }
    .final-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
    .final-inner h2 { margin: 0; font-size: 27px; }
    .final-inner p { margin: 6px 0 0; color: #565044; }
    .site-footer { background: var(--ink); color: #f5f3ec; padding: 37px 0 24px; }
    .footer-top { display: flex; justify-content: space-between; gap: 28px; align-items: start; }
    .footer-brand p { max-width: 470px; margin: 12px 0 0; color: #aaa9a2; font-size: 13px; }
    .footer-links { display: flex; gap: 20px; flex-wrap: wrap; color: #cfcec7; font-size: 13px; }
    .footer-links a:hover { color: var(--yellow); }
    .footer-bottom { border-top: 1px solid #393936; margin-top: 25px; padding-top: 17px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: #999891; font-size: 12px; }
    @media (max-width: 1024px) {
      .hero-grid { gap: 28px; }
      .hero-visual { min-height: 310px; }
      .step-list { grid-template-columns: repeat(2, 1fr); row-gap: 18px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 36px, var(--content)); }
      .nav-wrap { min-height: 68px; gap: 12px; }
      .brand { font-size: 15px; }
      .brand-mark { width: 31px; height: 31px; }
      .nav-links { gap: 2px; }
      .nav-link { padding: 8px 9px; font-size: 13px; }
      .age-note { display: none; }
      .hero { padding-top: 42px; }
      .hero-grid { grid-template-columns: 1fr; }
      .hero-visual { min-height: 250px; }
      .pain-grid, .editorial-grid, .audience-grid, .faq-grid { grid-template-columns: 1fr; }
      .pain-grid { gap: 20px; }
      .solution-grid { grid-template-columns: 1fr 1fr; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .section-head { align-items: start; flex-direction: column; }
      main section { padding: 58px 0; }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 30px); }
      .nav-wrap { flex-wrap: wrap; padding: 12px 0; }
      .brand { flex: 1; }
      .nav-actions { margin-left: auto; }
      .nav-links { order: 3; width: 100%; border-top: 1px solid var(--line); padding-top: 7px; justify-content: space-between; }
      .nav-link { padding-inline: 10px; }
      .nav-actions .button { min-height: 38px; padding: 7px 11px; font-size: 13px; }
      .hero h1 { font-size: 37px; }
      .hero-copy { font-size: 14px; }
      .hero-foot { gap: 9px 18px; }
      .hero-visual { min-height: 220px; }
      .pain-quote { font-size: 23px; }
      .pain-points, .solution-grid, .voice-grid { grid-template-columns: 1fr; }
      .solution-item { min-height: 0; }
      .step-list { grid-template-columns: 1fr; }
      .stats-grid { gap: 17px 10px; }
      .stat { padding-left: 12px; }
      .stat strong { font-size: 24px; }
      .news-item { grid-template-columns: 1fr auto; gap: 5px 12px; }
      .news-date { grid-column: 1 / -1; }
      .news-item h3 { font-size: 15px; }
      .final-inner, .footer-top { flex-direction: column; align-items: flex-start; }
      .final-inner h2 { font-size: 23px; }
      .section-head h2, .faq-grid h2 { font-size: 26px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }

/* roulang page: category1 */
:root{--ink:#171716;--paper:#f4f2ed;--white:#fffefa;--coral:#e5644e;--mint:#c8e2d5;--yellow:#e8c85b;--muted:#77766f;--line:#dedbd3;--radius:8px;--shadow:0 12px 32px rgba(23,23,22,.08);--content:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{display:block;max-width:100%}
.container{width:min(var(--content),calc(100% - 48px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(244,242,237,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(23,23,22,.1)}
.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:18px;font-weight:900;white-space:nowrap}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:var(--white);background:var(--coral);font-size:17px;font-weight:900}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{padding:9px 13px;border-radius:6px;color:#56554f;font-weight:650;transition:.2s ease}
.nav-link:hover,.nav-link:focus-visible,.nav-link.active{background:#e8e5dd;color:var(--ink);outline:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.age-note{color:var(--muted);font-size:12px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:10px 17px;border:1px solid transparent;border-radius:6px;font-weight:750;transition:transform .2s,background .2s,box-shadow .2s}
.button:hover{transform:translateY(-2px)}
.button:focus-visible{outline:3px solid rgba(229,100,78,.35);outline-offset:2px}
.button-dark{background:var(--ink);color:#fff}
.button-dark:hover{background:#343430;box-shadow:var(--shadow)}
.button-coral{background:var(--coral);color:#fff}
.button-coral:hover{background:#cc503d}
.page-hero{padding:62px 0 54px;background:var(--ink);color:var(--white)}
.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.eyebrow,.section-kicker{color:var(--coral);font-size:12px;font-weight:850;letter-spacing:.04em}
.page-hero .eyebrow{color:var(--yellow)}
.page-hero h1{max-width:720px;margin:14px 0 18px;font-size:clamp(36px,5vw,62px);line-height:1.16;font-weight:900}
.hero-copy{max-width:680px;color:#d1d0c9;font-size:16px;line-height:1.95}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:25px}
.hero-panel{padding:25px;background:#283c38;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius)}
.panel-title{margin:0 0 17px;font-size:18px;font-weight:800}
.check-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:#e3e7df}
.check{width:21px;height:21px;flex:0 0 21px;display:grid;place-items:center;border-radius:50%;background:var(--yellow);color:var(--ink);font-size:12px;font-weight:900}
.hero-foot{border-top:1px solid rgba(255,255,255,.16);margin-top:34px;padding-top:17px;display:flex;gap:24px;flex-wrap:wrap;color:#c5c4bd;font-size:12px}
.hero-foot b{color:#fff}
main section{padding:72px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
.section-head h2{margin:0;font-size:30px;line-height:1.25;font-weight:850}
.section-head p{max-width:610px;margin:9px 0 0;color:var(--muted)}
.intro-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.intro-layout h2{margin:0;font-size:34px;line-height:1.3}
.intro-layout p{margin:0;color:var(--muted)}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.topic-card{min-height:220px;padding:23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.2s}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.topic-card:nth-child(2){background:var(--mint)}
.topic-card:nth-child(3){background:#f9e9b1}
.topic-index{color:var(--coral);font-size:13px;font-weight:900}
.topic-card h3{margin:13px 0 8px;font-size:20px}
.topic-card p{margin:0;color:var(--muted);font-size:14px}
.compare-section{background:var(--white)}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare-panel{padding:26px;border:1px solid var(--line);border-radius:var(--radius)}
.compare-panel.dark{background:var(--ink);color:#fff}
.compare-panel.mint{background:var(--mint)}
.compare-panel h3{margin:0 0 14px;font-size:22px}
.compare-panel p{margin:0;color:var(--muted)}
.compare-panel.dark p{color:#d1d0c9}
.meta-list{display:grid;gap:0;margin:22px 0 0;padding:0;list-style:none}
.meta-list li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-top:1px solid var(--line);font-size:14px}
.dark .meta-list li{border-color:rgba(255,255,255,.18)}
.meta-list span{color:var(--muted)}
.dark .meta-list span{color:#c5c4bd}
.timeline{border-top:1px solid var(--line)}
.timeline-item{display:grid;grid-template-columns:115px 1fr 28px;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
.timeline-label{color:var(--coral);font-weight:800;font-size:13px}
.timeline-item h3{margin:0;font-size:17px}
.timeline-item p{margin:4px 0 0;color:var(--muted);font-size:13px}
.timeline-arrow{color:var(--coral);font-size:20px}
.quote-section{background:var(--ink);color:#fff}
.quote-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:center}
.quote{margin:0;font-size:28px;line-height:1.55;font-weight:750}
.quote-mark{color:var(--yellow);font-size:52px;line-height:1}
.quote-note{padding-left:22px;border-left:2px solid var(--coral);color:#d1d0c9}
.audience-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:38px}
.audience-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.audience-list li{padding:13px 15px;background:var(--white);border:1px solid var(--line);border-radius:6px}
.audience-list b{margin-right:8px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:125px 1fr auto;align-items:center;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}
.news-item h3{margin:0;font-size:17px}
.news-item p{margin:4px 0 0;color:var(--muted);font-size:13px}
.news-arrow{color:var(--coral);font-size:20px}
.faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:44px}
.faq-grid h2{margin:0;font-size:30px;line-height:1.3}
.faq-list{border-top:1px solid var(--line)}
.faq-item{padding:17px 0;border-bottom:1px solid var(--line)}
.faq-item h3{margin:0 0 6px;font-size:16px}
.faq-item p{margin:0;color:var(--muted);font-size:14px}
.cta-band{padding:42px 0;background:var(--coral);color:#fff}
.cta-row{display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta-row h2{margin:0;font-size:30px;line-height:1.3}
.cta-row p{margin:7px 0 0;color:#ffe8e2}
.cta-row .button{background:#fff;color:var(--ink)}
.site-footer{background:var(--ink);color:#f5f3ec;padding:37px 0 24px}
.footer-top{display:flex;justify-content:space-between;gap:28px;align-items:start}
.footer-brand{max-width:520px}
.footer-brand p{margin:14px 0 0;color:#aaa9a1;font-size:13px;line-height:1.8}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;color:#d6d4cc;font-size:13px}
.footer-links a:hover{color:var(--yellow)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:30px;padding-top:17px;border-top:1px solid rgba(255,255,255,.15);color:#92918a;font-size:12px}
@media(max-width:1024px){.nav-actions .age-note{display:none}.page-hero-grid{gap:30px}.topic-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(var(--content),calc(100% - 32px))}.nav-wrap{min-height:68px;gap:12px}.brand{font-size:15px}.brand-mark{width:30px;height:30px;font-size:15px}.nav-links{overflow-x:auto;white-space:nowrap}.nav-link{padding:7px 9px;font-size:13px}.nav-actions .button{display:none}.page-hero{padding:46px 0 40px}.page-hero-grid,.intro-layout,.quote-grid,.audience-grid,.faq-grid{grid-template-columns:1fr}.page-hero h1{font-size:42px}.hero-panel{max-width:580px}.section-head{display:block}.section-head h2{font-size:27px}.section-head p{margin-top:12px}.compare-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.cta-row{display:block}.cta-row .button{margin-top:20px}.footer-top{display:block}.footer-links{margin-top:24px}}
@media(max-width:520px){.topic-grid{grid-template-columns:1fr}.page-hero h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .button{width:100%}.timeline-item{grid-template-columns:1fr 24px;gap:7px}.timeline-label{grid-column:1/-1}.timeline-item p{padding-right:8px}.news-item{grid-template-columns:1fr auto;gap:7px}.news-item time{grid-column:1/-1;color:var(--coral)}.quote{font-size:23px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}